Home / 21,417.27-29,556.23-11,985.81

Finding the Fourth Proportional to 21,417.27, 29,556.23 and 11,985.81

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Solution

The fourth proportional to 21,417.27, 29,556.23 and 11,985.81 is: 16,540.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,417.27 : 29,556.23 = 11,985.81 : x
  2. Step 2: Convert to fraction form
    21,417.27/29,556.23 = 11,985.81/x
  3. Step 3: Cross multiply
    21,417.27x = 29,556.23 × 11,985.81
  4. Step 4: Simplify right side
    21,417.27x = 354,255,297.17
  5. Step 5: Solve for x
    x = 354,255,297.17/21,417.27
  6. Step 6: Final answer
    x = 16,540.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.